Originally Posted by Wicked CAS

I agree with most except infrasonic... I would leave that "on" in this application. That will eliminate any frequency lower then 30 hz not go to the sub via amplifier. Human ear can not hear about 20Hz and down anyways and there are very afew recordings that will reproduce 25-30 hz, this allows the amp and subwoofer to work a lot more efficiently. Less heat on amp and less workout for the suboofer for a sound you will not be able to hear.